U.S. flag

An official website of the United States government

NM_002485.5(NBN):c.550G>A (p.Val184Ile) AND Microcephaly, normal intelligence and immunodeficiency

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Apr 26, 2021
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV000558763.7

Allele description [Variation Report for NM_002485.5(NBN):c.550G>A (p.Val184Ile)]

NM_002485.5(NBN):c.550G>A (p.Val184Ile)

Gene:
NBN:nibrin [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
8q21.3
Genomic location:
Preferred name:
NM_002485.5(NBN):c.550G>A (p.Val184Ile)
HGVS:
  • NC_000008.11:g.89978254C>T
  • NG_008860.1:g.11418G>A
  • NM_001024688.3:c.304G>A
  • NM_002485.5:c.550G>AMANE SELECT
  • NP_001019859.1:p.Val102Ile
  • NP_002476.2:p.Val184Ile
  • NP_002476.2:p.Val184Ile
  • LRG_158t1:c.550G>A
  • LRG_158:g.11418G>A
  • LRG_158p1:p.Val184Ile
  • NC_000008.10:g.90990482C>T
  • NM_002485.4:c.550G>A
Protein change:
V102I
Links:
dbSNP: rs1554566641
NCBI 1000 Genomes Browser:
rs1554566641
Molecular consequence:
  • NM_001024688.3:c.304G>A - missense variant - [Sequence Ontology: SO:0001583]
  • NM_002485.5:c.550G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Microcephaly, normal intelligence and immunodeficiency (NBS)
Synonyms:
IMMUNODEFICIENCY, MICROCEPHALY, AND CHROMOSOMAL INSTABILITY; SEEMANOVA SYNDROME II; Nijmegen breakage syndrome; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0009623; MedGen: C0398791; Orphanet: 647; OMIM: 251260

Recent activity

Clear Turn Off Turn On

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...

Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV000634317Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Apr 26, 2021) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000634317.4

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The isoleucine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with NBN-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces valine with isoleucine at codon 184 of the NBN protein (p.Val184Ile). The valine residue is moderately conserved and there is a small physicochemical difference between valine and isoleucine.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Sep 29, 2024